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This article in AJ

  1. Vol. 57 No. 1, p. 89-90
    Received: July 3, 1964

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Longevity of Soil Reaction Effects Following Lime and Alum Additions1

  1. T. B. Hutcheson and
  2. J. F. Freeman2



Effects of lime and aluminum sulfate on pH were quite pronounced 6 weeks after application, but had diminished in 12 months and changed little during an additional 24-month period. Three years after applications, little effect was evident on pH, exchangeable acidity, Al, Ca, or Mg below 8 inches. Exchangeable Al levels were less than 1/100th of those actually applied, indicating that hydrolysis and precipitation of Al as some species of aluminum hydroxide had occurred.

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